Sth 57 SB over Ahnapee R
GoodDoor County, Wisconsin · 0.9 MI E of School Lane · Structure no. B15001600000000
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 59 ft
- 1 main span
- Daily traffic
- 6,000
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 57 SB over Ahnapee R is a prestressed concrete stringer/multi-beam or girder carrying Sth 57 SB over Ahnapee R in Door County, Wisconsin. It was built in 2005, so it is 20 years old, younger than the Wisconsin average of 40.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 6,000 vehicles a day, projected to reach 11,300 by 2043. The structure is 59 ft (18 m) long and 43 ft wide. If it were closed, the detour would be 2.5 mi (4 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 57 SB over Ahnapee R built?
It was built in 2005, making it 20 years old in 2025.
What condition is Sth 57 SB over Ahnapee R in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.
How much traffic does Sth 57 SB over Ahnapee R carry?
About 6,000 vehicles per day (2024 count).
How long is Sth 57 SB over Ahnapee R?
The structure is 59 ft (18 m) long with a longest span of 55 ft (16.8 m) and a deck 43 ft wide.
Who owns Sth 57 SB over Ahnapee R?
It is owned by the State Highway Agency.